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Patented May 30, I899. 0. F. DAY.

COMBINED LOCK AND LATCH.

(Application filed Jan. 9, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

ORIN F. DAY, OF KANSAS CITY, MISSOURI, ASSIGNOR ONE-HALF TO PETERNORDWALL, OF SAME PLACE.

COMBINED LOCK AND LATCH.

sPEcIEIcA'rIoN forming part of Letters Patent No. 626,147, dated May 30,1899.

Application filed January 9, 1899.

T at whom it may concern.-

Be it known that I, ORIN'F. DAY, a citizen of the UnitedStates ofAmerica, residing at Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements in aCombined Lock and Latch; and I do hereby declare that the following is afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, forming a partof this specification.

My invention has for its object, primarily, the automatic control, ofthe latch-bolt by mechanism, such as a weight, acting to controlthe'movements of the latch-bolt from an unlatched to a latched position;second, the

' automatic closure of the openingin the lockcase for the key upontheoutward throw of the latch; third, to prevent the retraction of thelatch-bolt, and, fourth, to prevent the lateral movement of the keyholeguard-plate when in position opposite the keyhole.

My invention consists in the novel construction and combination ofparts, such as will befirst fully described, and specifically pointedout in the claims.

In the drawings, Figure 1 is a view in elevation of the case for thecombined lock and latch with the side removed, showing the novel latchand lock bolt controlling mechanism and the keyhole guard-plate. Fig. 2is a reverse view of the case as seen in Fig. 1 upon a reduced scale.Fig. 3 is a horizontal sectional view of the case, taken upon the line aw in Fig. 1. Fig. 4 is a detail broken portion in perspective of theupper end of the lock-case, showing the armed hub, aportion ofthe'reversible latch-bolt, and the removable key-bolt for thelatch-bolt. Figs. 5 and 6 are'views of an alternate key for looking thelatch-bolt applied to a mortise-lock case.

Similar letters of reference indicate corresponding parts in all thefigures.

Referring to thedrawings, A represents the case for the combined lockand latch, which case is of the ordinary construction.

B represents the latch-bolt, which is located in the upper part of thecase and near the top Serial No. 701,683. (No model.)

portion a of said case, one end of which bolt extends through theopening a in the forward end a of saidv case, the other end of whichlatch-bolt extendsin the direction of and toa position a considerabledistance from the rear end a of case A.

Orepresents an armed hub of the usual construction and which is locateda short distance from the end a of the case A and pivoted or journaledin the respective sides of the case below the line of the under side ofthe latch-bolt B, said hub being adapted to receive a spindle ofordinary description.

D represents the lock-bolt, which is located in the lower part of thecase A a short distance above the bottom portion a of case A. Said boltD consists of a straight bar, one end of which extends through anopening a in the forward end a of the case A and the other end extendsto a position near the rear end a of said case. In the under side andrear end portion of thebolt are notches d d, which receive alternately apin d on the side a of case A, and which pin supports the rear end ofthe bolt in a locked or unlocked position. On the side of the bolt Dopposite the side of the case is a longitudinal groove or recess 01extending from a point a considerable distance in rear of the forwardend of the bolt to a point near the forward notch d in the rear end ofthe said bolt. Opposite the central portion of the bolt D, in the side aof the case, is the keyhole a which also extends through the side platea opposite thereto in the usual manner. In the under side of bolt D,opposite the keyhole (Z is a notch d of considerable width for theoperation of the bolt by the wards of the key.

The arm 0 of the hub 0 extends betweenthe rear end of the latch-bolt andthe side of case A. and upon the side of the arm 0 adjacent to the latchis a pin 0 and in the under arm 0 and which is bent at right angles tosaid arm near the point of connection with said arm, the other endextending in the direction of the loek-bolt D, and upon said end is aweight E, which weight, as shown, is pearshapcd, the underside extendingdownwardly in a single outwardly-curved line to its lower end, and saidend of said weight normally rests upon the upper side of the lock-bolt Dand at a central point to the opposite ends of said bolt. \Vith theunder side portion of the weight E and in line with the side of saidweight in the direction of the side CL of case A is connected rigidly akeyhole guard-plate F of considerable width, consisting of an 0&- setfrom the said plate, which extends within the recess (1 in the side ofthe lock-bolt D and over the keyhole a Above the rear end of thelock-bolt D is a stationary guide-pin (Z which limits the elevation ofthe bolt, and upon the upper side and forward end of the bolt is a lug(Z which limits the outward throw of the bolt.

In the upper portion and rear end a of the lock-case A is a narrowopening a, in which is a key-bolt G. Said bolt consists of a-flat bar,upon the outer end of which is a thumbpiece 9, and on the inner end ofsaid bar is a block 9' larger than the opening a in the end a of thecase A, and which block is secured I to the bar by a screwg which blockis adapted to bear against the inner end of the latchbolt 13. On the barG, about an equal distance from the block g and the thumb-piece g, areshoulders g 9 which lie fiatwise with the bar and pass through theopening a and when the bar is turned at right angles the shouldersprevent the retraction of the bar.

In operation and during the timethe latch bolt only is required to beused the key-bolt G is drawn outwardly with the shoulders g g on theoutside of the case, thus permitting the full retraction of thelatch-bolt, the lockbolt D being within the case A in an unlockedposition, the weight E acting by gravity to throw the upper arm 0 of thehub G forward, and thus extends the forward end of the latchbolt beyondthe outer side of the end (P of the case A into its normal position forautomatically engaging with the usual keeper on the door-jamb andlatching therewith, the said weight E normally resting upon the upperside of the lock-bolt D. The contact of the latch-bolt Bwith the keeperor any obstruc- D, the key is introduced within the keyhole (Z and thewards of the key raise the bolt from the pin (1, the weight E serving tocontrol the forward and rearward movement of the bolt, it being observedthat the keyhole during the operation of the bolt from the inner side ofthe door is kept closed by the plate E, which plate may be raised, so asto expose the keyhole over which it slides, by simply turning thespindle in the hub C and retracting the latch-bolt l3. YVhen the bolt Dis thrown outward in a locked position, the stopbolt G is forcedinwardly, so as to carry the shoulders g on the inner side of the end aof the case A, which forces the block g against the rear end of thelatch-bolt, and the key turned, so as to prevent a rearward movement ofsaid latch. In this position of the key-bolt the weight E simultaneouslyis forced with sufficient pressure upon the upper side of the lock-boltD as to prevent the movement of said lockbolt. In this manner both thelatch-bolt and lock-bolt are prevented from being moved and effecting,practically, a double lock.

The latch-bolt may be utilized as a bolt when acting as a latch by theemployment of the key-bolt G, as before described, the lockbolt D,however, being first drawn within the lock-case in an unlocked position.

In my invention I obviate the employment of springs to control eitherthe latch-bolt or the lock-bolt, and thus add increased elliciency tothe wear of the lock and latch.

In ordinary mortise lock and latch cases I employ instead of thekey-bolt G a key II, which is inserted through the opening hin the sideof the lock-case at a point near the rear end of the latch-bolt and atright angles thereto, the ward 71 being a blank which may be turned soas to meet the rear end of the latch-bolt, as seen in Figs. 5 and G, andprevent the retraction of the latch-bolt.

During the upward movement of the lockbolt D to place the same in alocked position the raising of the weight E accommodates the movement ofthe lock-bolt without retracting the latch-bolt, the weightinstantlyreturn ing by gravity to its-normal position.

The few parts required in the lock and their novel coaction affords alock of great strength, it being observed that an attempt to enter thekeyhole while the keyhole-plate is over the keyhole with any instrumentwill be resisted by the lock-bolt, while a lateral movement iscounteracted by the weight E.

The latch-bolt B may be reversed in position for the change from a rightto a left hand lock-case, the end of the latch-bolt resting upon the hubO in this instance,with the notch 19 extending in an' upward direction,and in this position the pin 0 in the side of the arm is enabled to moveupwardly in the notch and at the same time, acting upon the parallelinclined sides of the notch, causes a full retraction of the latch-boltin the elevation of the weight.

Having fully described my invention, what I now claim as new, and desireto secure by Letters Patent, is-

1. In a case for a combined lock and latch, a latch-bolt, and alock-bolt having a recess in one side thereof, and a keyhole in the sideof said case below the level of the lock-bolt, a pivoted hub having armsextending in opposite directions one of said arms being pivotallyconnected with the rear end of said latchbolt and an extension of theother arm at right angles thereto, and a weight upon said extended endhaving its under side extending downwardlyin asingle outwardly-curvedline and adapted to bear normally upon the said lock-bolt and permit ofthe rise and fall of said bolt when operated by the key, an offset fromsaid weight forming a guard-plate extending within the recess of thesaid lockbolt, and over one of the keyholes whereby the lock-bolt may bethrown to lock the door from a position on the inner side of the door,

2. The combination with the latch-case having an opening in the rear endof said case of a latch-bolt and a key consisting of a flat bar havingshoulders adapted to enter said opening in said case and a blockhaving-an opening for the inner end of said key adapted to contact withthe rear end of said latchbolt and a fastening device upon said block.

ORIN F. DAY. Witnesses:

JOHN T. MARSHALL, O. F. MEAD.

